====== Posterior callosotomy ======

A 2-stage [[corpus callosotomy]] is accepted as a [[palliative]] [[procedure]] for [[patient]]s older than 16 years with, in particular, medically intractable [[generalized seizure]]s and [[drop attack]] [[seizure]]s and is preferable for a lower risk of [[disconnection syndrome]]. 

Methods by which a previously performed [[craniotomy]] can be reopened for posterior callosotomy have already been reported.

===== Posterior corpus callosotomy using a parietooccipital interhemispheric approach =====

Ito et al. published a surgical [[technique]] for posterior [[callosotomy]] using a [[interhemispheric parietooccipital approach]] with a semi-prone park-bench position as a second surgery. Although this [[procedure]] requires an additional skin [[incision]] in the parietooccipital region, it makes the 2-stage [[callosotomy]] safer and easier to perform because of reduced intracranial adhesion, less bleeding, and an easier approach to the [[splenium]] of the [[corpus callosum]]
((Ito H, Morino M, Niimura M, Takamizawa S, Shimizu Y. Posterior callosotomy
using a parietooccipital interhemispheric approach in the semi-prone park-bench
position. J Neurosurg. 2015 Jun 5:1-4. [Epub ahead of print] PubMed PMID:
26047417.)).